Nummer: 04413b
| Area : | Western Area |
| Sea area : | North Atlantic |
| Date of attack : | 26.02.1941 |
| Nationality of U-boat : | German |
| U-boat : | U 47 |
| Commander : | Prien |
| Grid : | AM 4236 |
| presumed target type : | Steam Freighter |
| presumed result : | sunk |
| Used weapon(s) : | Torpedo(es) |
| Convoy : | OB.290 |
| Date of observation : | 26.02.1941 |
| Time of observation : | 00:25 |
| Nationality of target : | British |
| Actual type of target : | Motor Tanker |
| Name of target : | Diala |
| Year of launch : | 1938 |
| Actual tonnage : | 8106 BRT |
| Actual result : | damaged |
| Position of target : | 55.50n 14w |
| Footnote : | U-47 reported to have sunk ships of 22.000 grt alltogether. But there was no other U-boat, which could have attacked there. - ""Rydboholm" was finally bombed by a FW200 aircraft the following morning, and abandoned. She sank in pos. 55°48'N/14°25'W.D212 |
| related attacks : | Angriff 1 |
| Convoy : | OB.290 |
| Route of convoy : | Liverpool - North America (out) |
| Remark to convoy : | Sep 1939 to Jul 1940 via South Ireland, Jul to Okt 1940 via North Cannel, then ON. |